$30-40 for a box of 50 for "cheap stuff", double that for HP.
Reloading is almost a must to shoot 10mm. Not only you save a ton of money, but almost all factory 10mm sold in Canada is loaded to .40SW velocities, aka "mouse fart loads". No point in paying double the price for 10mm if you're getting the exact same ballistics as ".40 Short & Weak"